Finding the Fourth Proportional to 22,775.21, 31,429.83 and 12,704.30

Step by Step Solution

1. Step 1: Write the proportion equation
   22,775.21 : 31,429.83 = 12,704.30 : x
2. Step 2: Convert to fraction form
   22,775.21/31,429.83 = 12,704.30/x
3. Step 3: Cross multiply
   22,775.21x = 31,429.83 × 12,704.30
4. Step 4: Simplify right side
   22,775.21x = 399,293,832.12
5. Step 5: Solve for x
   x = 399,293,832.12/22,775.21
6. Step 6: Final answer
   x = 17,531.95